Generation of multi-carrier based on a recirculating frequency shifter with delay interferometer

Recirculating frequency shifter （RFS） can generate stable multi-carder, but the carder-to-noise-ratio （CNR） is limited because noise is accumulated round by round in the recirculation loop structure. A modified RFS with a delay inter- ferometer （DI） is proposed in this paper. The DI can suppress the...

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Published inOptoelectronics letters Vol. 9; no. 6; pp. 418 - 420
Main Author 成虹桥 席丽霞 林嘉川 张晓光 张霞 李建蕊
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.11.2013
Subjects
Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
RFS
基础
多载波
干涉仪
延迟
循环回路
抑制噪声
频移
Delay Inter
Power Spectrum Density
Optical Spectrum Analyzer
Erbium Dope Fiber Amplifier
Amplify Spontaneous Emission
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ISSN1673-1905
1993-5013
DOI10.1007/s11801-013-3124-1

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Summary:Recirculating frequency shifter （RFS） can generate stable multi-carder, but the carder-to-noise-ratio （CNR） is limited because noise is accumulated round by round in the recirculation loop structure. A modified RFS with a delay inter- ferometer （DI） is proposed in this paper. The DI can suppress the accumulated noise, and enhance the CNR of multi-carrier. The principle of the generation of high quality multi-carrier based on an RFS with DI is analyzed theoretically. 50 stable carriers with spacing of 10.7 GHz are successfully generated. The flatness of 50 stable carriers is 3 dB, and the CNR is 43 dB which is increased by 3 dB compared with the structure without DI.
Bibliography:Recirculating frequency shifter （RFS） can generate stable multi-carder, but the carder-to-noise-ratio （CNR） is limited because noise is accumulated round by round in the recirculation loop structure. A modified RFS with a delay inter- ferometer （DI） is proposed in this paper. The DI can suppress the accumulated noise, and enhance the CNR of multi-carrier. The principle of the generation of high quality multi-carrier based on an RFS with DI is analyzed theoretically. 50 stable carriers with spacing of 10.7 GHz are successfully generated. The flatness of 50 stable carriers is 3 dB, and the CNR is 43 dB which is increased by 3 dB compared with the structure without DI.
12-1370/TN
CHENG Hong-qiao, Xl Li-xia , LIN Jia-chuan, ZHANG Xiao-guang , ZHANG Xia , and LI Jian-rui（1. State Key Laboratory of Information Photonics and Optical Communications, Beij＇ing University of Posts and Telecommunications, Beijing 100876, China 2. Key Laboratory of Optical Communications Science ＆ Technology in Shandong Province of China, Liaocheng University, Liaocheng 252000, China）
ISSN:1673-1905
1993-5013
DOI:10.1007/s11801-013-3124-1